{"id":868,"date":"2023-12-12T15:39:17","date_gmt":"2023-12-12T07:39:17","guid":{"rendered":"https:\/\/www.britecelectric.com\/?post_type=blog&p=868"},"modified":"2024-09-05T16:41:11","modified_gmt":"2024-09-05T08:41:11","slug":"how-to-choose-an-spd","status":"publish","type":"blog","link":"https:\/\/www.britecelectric.com\/sv\/blog\/how-to-choose-an-spd\/","title":{"rendered":"Hur man v\u00e4ljer en SPD"},"content":{"rendered":"Varf\u00f6r k\u00f6pa en \u00f6versp\u00e4nningsskyddsenhet (SPD)?<\/strong>\r\n\r\nEn \u00f6versp\u00e4nningsskyddsanordning (SPD) \u00e4r utformad f\u00f6r att minska \u00f6versp\u00e4nningen, vilket skyddar utrustningen och minskar reparations- och utbyteskostnaderna. Varje SPD minskar \u00f6versp\u00e4nningen till utrustningen under en \u00f6versp\u00e4nning till en sp\u00e4nningstestad niv\u00e5 som kallas Let-Through-Voltage.\r\n\r\nTyper av skydd<\/strong>\r\n\r\nN\u00e4r man diskuterar olika typer av \u00f6versp\u00e4nningsskydd finns det tre huvudtyper:\r\n\r\n\r\n\r\n\r\n\r\n\r\n
Typ<\/td>\r\nVad den g\u00f6r<\/td>\r\nVar man anv\u00e4nder den<\/td>\r\n<\/tr>\r\n
Typ 1<\/td>\r\nSkydd mot direkta blixtnedslag<\/td>\r\nHos eln\u00e4tet till varje elinstallation d\u00e4r externt \u00e5skskydd \u00e4r installerat, eller matas av luftledningar.<\/td>\r\n<\/tr>\r\n
Typ 2<\/td>\r\n\u00d6versp\u00e4nningsskydd<\/td>\r\nVid eln\u00e4tet i alla byggnader som inte beh\u00f6ver n\u00e5got \u00e5skskydd och f\u00f6r anv\u00e4ndning p\u00e5 alla underbr\u00e4dor mer \u00e4n 10-15 meter fr\u00e5n huvudpanelen.<\/td>\r\n<\/tr>\r\n
Typ 3<\/td>\r\nSlututrustningsskydd<\/td>\r\nP\u00e5 vilken utrustning som helst d\u00e4r en l\u00e5g genomsl\u00e4ppssp\u00e4nning beh\u00f6vs.<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\nVad \u00e4r det korrekta s\u00e4ttet att best\u00e4mma vilken storlek p\u00e5 SPD som ska anv\u00e4ndas i ett system?<\/strong>\r\n\r\nSPDs are not one-size-fits-all devices, nor do the sizes of their kA rating (the surge rating) go hand-in-hand with the size of the panel. In other words, do not select an SPD with a maximum kA rating just because the panel is large.\r\n\r\nTo determine which SPD should be used for the system, you must know the reference to the ground as well as the type of voltage that is present. Therefore, a panel designer should first determine the type of electrical system in use, and then calculate the voltage reference to ground. The formula to determine this will depend on the type of system.\r\n\r\nFor example, for a single-phase system (also called a split-phase system), the line-to-line voltage is divided by two. The result is the optimal amount of volts that the SPD should have for that system.\r\n\r\nHur man v\u00e4ljer en enhet<\/strong>\r\n
    \r\n \t
  • \u00c4r enheten l\u00e4mplig f\u00f6r ditt jordningsarrangemang?<\/li>\r\n<\/ul>\r\nDetta \u00e4r ett av de vanligaste problemen med SPD-installation. Den viktigaste h\u00e4nsynen \u00e4r f\u00f6r TT-system, d\u00e4r enheten m\u00e5ste vara l\u00e4mplig.\r\n
      \r\n \t
    • Skyddar enheten b\u00e5de str\u00f6mf\u00f6rande och neutrala poler?<\/li>\r\n<\/ul>\r\nDet finns ett f\u00e5tal enheter p\u00e5 marknaden som kan verka billiga j\u00e4mf\u00f6rt med andra enheter, men om enheten inte skyddar b\u00e5de str\u00f6mf\u00f6rande och neutral, kan \u00f6versp\u00e4nningar komma in i din fastighet och kringg\u00e5 SPD.\r\n
        \r\n \t
      • Vilken garanti ger tillverkaren?<\/li>\r\n<\/ul>\r\nDetta \u00e4r i allm\u00e4nhet en nyckelindikator p\u00e5 kvaliteten p\u00e5 de komponenter som anv\u00e4nds i SPD.\r\n\r\nK\u00f6pa r\u00e4tt \u00f6versp\u00e4nningsskydd (SPD).<\/strong>\r\n\r\nMedan alla SPD kommer att minska \u00f6versp\u00e4nningsniv\u00e5n som passerar till elektrisk utrustning under en \u00f6versp\u00e4nningsh\u00e4ndelse, har vissa en genomsl\u00e4ppssp\u00e4nning som \u00e4r f\u00f6r h\u00f6g f\u00f6r att f\u00f6rhindra skada, vilket \u00e4r n\u00e4stan samma sak som att inte ha n\u00e5got skydd alls. BRITEC erbjuder ett komplett utbud av \u00f6versp\u00e4nningsskydd f\u00f6r att skydda elektrisk utrustning. BRITEC Surge Protective Devices \u00e4r det r\u00e4tta valet f\u00f6r alla f\u00f6retag och hem.","protected":false},"featured_media":870,"parent":0,"menu_order":143,"template":"","meta":{"_acf_changed":false},"blog_category":[8],"class_list":["post-868","blog","type-blog","status-publish","has-post-thumbnail","hentry","blog_category-company-news"],"acf":{"des":"A Surge Protective Device (SPD) is designed to reduce surge voltage, which protects equipment and reduces repair and replacement costs. Every SPD reduces the surge voltage to equipment during a surge to a voltage tested level known as Let-Through-Voltage.","txt":"Why Purchase a Surge Protective Device (SPD)?<\/strong>\r\n\r\nA Surge Protective Device (SPD) is designed to reduce surge voltage, which protects equipment and reduces repair and replacement costs. Every SPD reduces the surge voltage to equipment during a surge to a voltage tested level known as Let-Through-Voltage.\r\n\r\nTypes of Protection<\/strong>\r\n\r\nWhen discussing di\ufb00erent types of surge protection, there are three main types:\r\n\r\n\r\n\r\n\r\n\r\n\r\n
        Type<\/td>\r\nWhat it does<\/td>\r\nWhere to use it<\/td>\r\n<\/tr>\r\n
        Type 1<\/td>\r\nProtection against direct Lightning strikes<\/td>\r\nAt the mains incomer of any electrical installation where external Lightning Protection is installed, or is fed by overhead lines.<\/td>\r\n<\/tr>\r\n
        Type 2<\/td>\r\nSurge Protection<\/td>\r\nAt the mains incomer of any building that doesn\u2019t need any lightning protection, and for use on any sub boards more than 10-15 meters from the main panel.<\/td>\r\n<\/tr>\r\n
        Type 3<\/td>\r\nEnd equipment protection<\/td>\r\nOn any piece of equipment where a low let through voltage is needed.<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\nWhat is the correct way to determine which size of SPD to use in a system?<\/strong>\r\n\r\nSPDs are not one-size-fits-all devices, nor do the sizes of their kA rating (the surge rating) go hand-in-hand with the size of the panel. In other words, do not select an SPD with a maximum kA rating just because the panel is large.\r\n\r\nTo determine which SPD should be used for the system, you must know the reference to the ground as well as the type of voltage that is present. Therefore, a panel designer should first determine the type of electrical system in use, and then calculate the voltage reference to ground. The formula to determine this will depend on the type of system.\r\n\r\nFor example, for a single-phase system (also called a split-phase system), the line-to-line voltage is divided by two. The result is the optimal amount of volts that the SPD should have for that system.\r\n\r\nHow to choose a device<\/strong>\r\n
          \r\n \t
        • Is the device suitable for your earthing arrangement?<\/li>\r\n<\/ul>\r\nThis is one of the most common issues with SPD installation. The most important consideration is for TT systems, where the device needs to be suitable.\r\n
            \r\n \t
          • Is the device protecting both the live & neutral poles?<\/li>\r\n<\/ul>\r\nThere are a few devices on the market with may seem inexpensive compared to other devices, but if the device is not protecting both live & neutral, surges may enter your property and bypass the SPD.\r\n
              \r\n \t
            • What warranty does the manufacturer provide?<\/li>\r\n<\/ul>\r\nThis is generally a key indicator of the quality of the components used in the SPD.\r\n\r\nPurchasing the Right Surge Protective Device (SPD).<\/strong>\r\n\r\nWhile any SPD will reduce the surge voltage level passing to electrical equipment during a surge event, some have a Let-Through-Voltage that is too high to prevent damage, which is almost the same as having no protection at all. BRITEC offers a complete range of surge protective devices to protect electrical equipment. BRITEC Surge Protective Devices are the right choice for all businesses and homes."},"_links":{"self":[{"href":"https:\/\/www.britecelectric.com\/sv\/wp-json\/wp\/v2\/blog\/868","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.britecelectric.com\/sv\/wp-json\/wp\/v2\/blog"}],"about":[{"href":"https:\/\/www.britecelectric.com\/sv\/wp-json\/wp\/v2\/types\/blog"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.britecelectric.com\/sv\/wp-json\/wp\/v2\/media\/870"}],"wp:attachment":[{"href":"https:\/\/www.britecelectric.com\/sv\/wp-json\/wp\/v2\/media?parent=868"}],"wp:term":[{"taxonomy":"blog_category","embeddable":true,"href":"https:\/\/www.britecelectric.com\/sv\/wp-json\/wp\/v2\/blog_category?post=868"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}